Improvements in or relating to electric signalling systems,申请号GB19320000899-传众专利搜索

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发明名称	Improvements in or relating to electric signalling systems
摘要
申请公布号	GB370859(A)	申请公布日期	1932.04.14
申请号	GB19320000899	申请日期	1932.01.12
申请人	WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY	发明人
分类号	G08B5/36	主分类号	G08B5/36
代理机构		代理人
主权项
地址

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